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/*-
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* Copyright (c) 2006, 2007 Lev Walkin <vlm@lionet.info>. All rights reserved.
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* Redistribution and modifications are permitted subject to BSD license.
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*/
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#ifndef _PER_ENCODER_H_
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#define _PER_ENCODER_H_
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#include <asn_application.h>
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#include <per_support.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct asn_TYPE_descriptor_s; /* Forward declaration */
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/*
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* Unaligned PER encoder of any ASN.1 type. May be invoked by the application.
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* WARNING: This function returns the number of encoded bits in the .encoded
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* field of the return value. Use the following formula to convert to bytes:
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* bytes = ((.encoded + 7) / 8)
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*/
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LIBLTE_API asn_enc_rval_t uper_encode(struct asn_TYPE_descriptor_s *type_descriptor,
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void *struct_ptr, /* Structure to be encoded */
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asn_app_consume_bytes_f *consume_bytes_cb, /* Data collector */
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void *app_key /* Arbitrary callback argument */
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);
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/*
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* A variant of uper_encode() which encodes data into the existing buffer
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* WARNING: This function returns the number of encoded bits in the .encoded
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* field of the return value.
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*/
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LIBLTE_API asn_enc_rval_t uper_encode_to_buffer(
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struct asn_TYPE_descriptor_s *type_descriptor,
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void *struct_ptr, /* Structure to be encoded */
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void *buffer, /* Pre-allocated buffer */
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size_t buffer_size /* Initial buffer size (max) */
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);
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/*
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* A variant of uper_encode_to_buffer() which allocates buffer itself.
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* Returns the number of bytes in the buffer or -1 in case of failure.
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* WARNING: This function produces a "Production of the complete encoding",
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* with length of at least one octet. Contrast this to precise bit-packing
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* encoding of uper_encode() and uper_encode_to_buffer().
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*/
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ssize_t uper_encode_to_new_buffer(
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struct asn_TYPE_descriptor_s *type_descriptor,
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asn_per_constraints_t *constraints,
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void *struct_ptr, /* Structure to be encoded */
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void **buffer_r /* Buffer allocated and returned */
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);
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/*
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* Type of the generic PER encoder function.
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*/
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typedef asn_enc_rval_t (per_type_encoder_f)(
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struct asn_TYPE_descriptor_s *type_descriptor,
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asn_per_constraints_t *constraints,
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void *struct_ptr,
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asn_per_outp_t *per_output
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);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _PER_ENCODER_H_ */
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